int plugin_register_write (const char *name,
int (*callback) (const data_set_t *ds, const value_list_t *vl));
int plugin_register_flush (const char *name,
int plugin_register_write (const char *name,
int (*callback) (const data_set_t *ds, const value_list_t *vl));
int plugin_register_flush (const char *name,
int plugin_register_shutdown (char *name,
int (*callback) (void));
int plugin_register_data_set (const data_set_t *ds);
int plugin_register_shutdown (char *name,
int (*callback) (void));
int plugin_register_data_set (const data_set_t *ds);